Fix CI: Use container env vars for Oracle user

Instead of manually creating the 'root' user with SQL*Plus, rely on the `gvenzl/oracle-free` container's initialization features (`APP_USER` and `APP_USER_PASSWORD`) which were already configured in `docker-compose.yml`.
Removed the SQL*Plus installation and user creation steps from the CI workflow.

Author: cursoragent

.github/workflows/ci.yml

@@ -78,27 +78,15 @@ jobs:
            sudo apt-get install -y alien libaio1t64 libodbcinst2 unixodbc
            wget https://download.oracle.com/otn_software/linux/instantclient/2114000/oracle-instantclient-basic-21.14.0.0.0-1.el8.x86_64.rpm
            wget https://download.oracle.com/otn_software/linux/instantclient/2114000/oracle-instantclient-odbc-21.14.0.0.0-1.el8.x86_64.rpm
-           wget https://download.oracle.com/otn_software/linux/instantclient/2114000/oracle-instantclient-sqlplus-21.14.0.0.0-1.el8.x86_64.rpm
            sudo alien -i oracle-instantclient-basic-21.14.0.0.0-1.el8.x86_64.rpm
            sudo alien -i oracle-instantclient-odbc-21.14.0.0.0-1.el8.x86_64.rpm
-           sudo alien -i oracle-instantclient-sqlplus-21.14.0.0.0-1.el8.x86_64.rpm
            sudo ln -s /usr/lib/x86_64-linux-gnu/libaio.so.1t64 /usr/lib/libaio.so.1
            echo "[Oracle 21 ODBC driver]" | sudo tee -a /etc/odbcinst.ini
            echo "Description = Oracle ODBC driver for Oracle 21c" | sudo tee -a /etc/odbcinst.ini
            echo "Driver = /usr/lib/oracle/21/client64/lib/libsqora.so.21.1" | sudo tee -a /etc/odbcinst.ini
            echo "LD_LIBRARY_PATH=/usr/lib/oracle/21/client64/lib:$LD_LIBRARY_PATH" >> $GITHUB_ENV
       - name: Start database container
         run: docker compose up --wait ${{ matrix.container }}
-      - name: Create Oracle user
-        if: matrix.database == 'oracle'
-        run: |
-           export LD_LIBRARY_PATH=/usr/lib/oracle/21/client64/lib:$LD_LIBRARY_PATH
-           /usr/lib/oracle/21/client64/bin/sqlplus sys/Password123!@//127.0.0.1:1521/FREE as sysdba <<EOF
-           CREATE USER root IDENTIFIED BY "Password123!";
-           GRANT CONNECT, RESOURCE, DBA TO root;
-           ALTER USER root QUOTA UNLIMITED ON USERS;
-           EXIT;
-           EOF
       - name: Show container logs
         if: failure()
         run: docker compose logs ${{ matrix.container }}